摘要:
Nitrogenous heterocyclic derivatives represented by the general formula (I) which each bind specifically to NR1/NR2B receptor and are useful as NR2B receptor antagonists (particularly analgesic for cancer pain or neuroprotectant); pharmaceutically acceptable salts thereof; or solvates of both: (I) wherein Z is N or CR 1 ; A 1 is a (substituted) nitrogenous aromatic mono- or fused-cyclic group having -NH- in the ring; A 2 is a (substituted) aromatic carbocyclic group or a (substituted) aromatic heterocyclic group; R 1 and R 2 are each independently hydrogen, hydroxy, or the like; R a , R b , R c and R d are each independently hydrogen or lower alkyl; w is 2 or 3; t is 1 or 2; X is -CONR 5 (CR 3 R 4 )n-, -NR 5 CO(CR 3 R 4 )n-, -NR 5 COCO(CR 3 R 4 )n-, -(CR 3 R 4 )mCONR 5 -, or the like; m is 1 to 4; n is 0 to 4; R 3 and R 4 are each independently hydrogen, halogeno, hydroxyl, or the like; and R 5 's are each independently hydrogen or lower alkyl.